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OWNER'S MANUAL
four-channel system amplifier
Thank you for purchasing a JL Audio amplifier for
your automotive sound system.
Your amplifier has been designed and manufactured to exacting
standards in order to ensure years of musical enjoyment in your vehicle.
For maximum performance and extended warranty
coverage, we highly recommend that you have your new amplifier
installed by an authorized JL Audio dealer. Your authorized
dealer has the training, expertise and installation equipment to ensure
optimum performance from this product. Should you
decide to install the amplifier yourself, please take the time
to read this manual thoroughly so as to familiarize yourself
with its installation requirements and setup procedures.
If you have any questions regarding the instructions in this
manual or any aspect of your amplifier's operation, please contact your
authorized JL Audio dealer for assistance. If you need further assistance,
please call the JL Audio Technical Support Department
at (954) 443-1100 during business hours.
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Table of Contents
Related Manuals for JL Audio 450/4V2
Summary of Contents for JL Audio 450/4V2
- Page 1 If you have any questions regarding the instructions in this manual or any aspect of your amplifier’s operation, please contact your authorized JL Audio dealer for assistance. If you need further assistance, please call the JL Audio Technical Support Department...
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Page 2: Protect Your Hearing
Cooling Efficiency Considerations: We value you as a long-term customer. For This amplifier is designed for operation in Your JL Audio amplifier employs an If mounting the amplifier under a seat, that reason, we urge you to practice restraint in... -
Page 3: Product Description
OEM Interface 8) Connect the positive and negative power channels benefit from JL Audio’s exclusive R.I.P.S. 450/4v2 can operate with a single pair of stereo processor (like the CleanSweep® CL441dsp). wires to the amplifier. A fuse near the inputs or with separate inputs for CH 1&2 and... -
Page 4: Power Connections
1) Input Mode Switch: If you wish to operate all metal-to-metal connection between the chassis turn-on output, the amplifier’s turn-on lead can four channels of the 450/4v2 with a single pair +12VDC Ground Remote and the termination of the ground wire. For... -
Page 5: Crossover Controls
1/3 octave or better. If you would like to select the filter cutoff frequency with a higher level of precision, consult the charts in Appendix A (page 22) of this manual. 8 | JL Audio - 450/4 Owner’s Manual... -
Page 6: Speaker Outputs
Unlike conventional amplifiers that require The 450/4v2 incorporates a pass-through the 450/4v2 is being used to drive front and box tuning. With sealed enclosures, the a specific impedance to produce optimum preamp output section, so that additional... -
Page 7: Bridging Considerations
When bridged, each channel produces top of the amplifier. These are as follows: that it may be sent in to JL Audio for service. doubling of impedance above 4Ω stereo / 8Ω signals of equal magnitude, but opposite polarity. -
Page 8: System Configurations
Res ult: the relative level of the LF and front and subwoofer amplifier. Input Mode After proper adjustment of the CH rear HF channels will be fixed by the 450/4v2’s CH 1&2 Input Section Input Range Input Sens. Bi-Amplified System with one 450/4v2 Res ult: in this mode, the user has the ability to Input Sens. - Page 9 Inp ut Connections: one stereo pair (front, Input Sens. Subwoofer with Multi-Channel Source typically) of source unit outputs is connected controls of the 450/4v2 use the method shown in Req uired: a multi-channel processor or source Input Mode CH 1&2 Input to the CH 1&2 inputs of the 450/4v2.
- Page 10 Input Section Freq. The 300/2v2 in two-channel stereo mode is inputs. In this mode, the 450/4v2’s preamp Range Filter perfectly matched to the 450/4v2 in three channel Input Mode CH 1&2 Input output is not used. Type 12dB 24dB Filter Left, Center, Right mode.
- Page 11 Input Sens. Input Sens. Input Sens. controls of the 450/4v2 use the method shown in Appendix B (page 22). For precise filter frequency information for the 450/4v2 refer to Appendix A (page 22). Refer to the subwoofer amplifier owner’s manual for proper adjustments.
- Page 12 2Ω 17.3 V not recommended 12.2 V not recommended and subwoofer level control to 3/4 of 1.5Ω 15.0 V not recommended 10.6 V not recommended maximum (if used to drive the 450/4v2). 22 | JL Audio - 450/4 Owner’s Manual...
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Page 13: Appendix C: Trouble Shooting
Please refer to Appendix B (page 22) to set the input sensitivity for Check your voltage source and grounding point. The power supply maximum, low-distortion output. of the 450/4v2 will operate with charging system voltages “My amplifier doesn’t turn on” down to 10V. Shutdown problems at higher volume levels Check the fuse, not just visually, but with a continuity meter. - Page 14 0 to +15 dB. Infrasonic Filter: 24 dB/octave @ 30 Hz, defeatable. Due to ongoing product development, all specifications are subject to change without notice. 26 | JL Audio - 450/4 Owner’s Manual...
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Page 15: Installation Notes
Inputs Left Output Right Output Bridged: 300W x 1 (3-8Ω) Filter Freq. (Hz) HP Filter Freq. (Hz) Bridged: 150W x 1 (3-8Ω) Bass Port (Left) (Right) (Left) (Right) Only 3 & 4 28 | JL Audio - 450/4 Owner’s Manual... - Page 16 NOTES NOTES 30 | JL Audio - 450/4 Owner’s Manual...
- Page 17 International Warranties: Products purchased outside the United States of America are covered only by that country’s distributor and not by JL Audio, Inc. Absolute Symmetry™ Class A/B Amplifier Circuit is covered by U.S. Patent #6,294,959 and is pending in the countries listed below.
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